Japanese knotweed can become a concern even if it’s not growing on or near your property. For one anonymous person Japanese knotweed in Bromley, became all too much to just ignore, as they reported the Japanese knotweed to the council. The concerns of the person were that the knotweed was growing on council land in close proximity to a Grade 11 listed building. Knowing the destruction the Japanese knotweed can cause, especially to old foundations, the council had no other option but to respond.